Court-appointed lawyers who represented Amy Bishop before she pleaded guilty to shooting six colleagues at the University of Alabama in Huntsville are getting more than $550,000 from the state for their work.

Circuit Judge Alan Mann has approved payments for two of the three attorneys who represented Bishop in the 2010 mass shooting.

Mann on Tuesday ordered a payment of $452,681 for Barry Abston. Mann earlier ruled that Roy Miller would get $100,426.

A former biology professor accused of pulling a gun from her purse and opening fire at a faculty meeting pleaded guilty Tuesday to killing three colleagues and wounding three others at the University of Alabama in Huntsville in 2010. Amy Bishop, 47, pleaded guilty to one count of capital murder involving two or more people and three counts of attempted murder during a hearing in Huntsville. She had earlier pleaded not guilty, and her lawyers said she planned to use an insanity defense.